Biology and predation of the Chrysoperla carnea (Stephens) (Insecta: Neuroptera: Chrysopidae) feeding on two important spider mite pests (Acari: Tetranychidae) under low humidity.

IF 1.8 2区 农林科学 Q2 ENTOMOLOGY
Muhammad Waleed Shakoor, Muhammad Kamran, Fahad Jaber Alatawi
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引用次数: 0

Abstract

The biology and predation of the generalist predator, Chrysoperla carnea (Stephen) (Neuroptera: Chrysopidae) were studied while feeding on motiles of two economically important spider mite pests: citrus brown mite (CBM), Eutetranychus orientalis (Klein) (Acari: Tetranychidae) and date palm mite (DPM), Oligonychus afrasiaticus (McGregor) (Acari: Tetranychidae) under low relative humidity (RH) (35 ± 5%). Results showed that the predator larvae did not pupate when fed on CBM and DPM motiles at both low and high RH. The shortest total predator larval duration was against motiles (14.65 ± 0.15 days) and eggs (15.42 ± 0.80 days) of CBM at low and high RH, respectively. Adult longevity, however, was higher when C. carnea was fed on the eggs of Ephestia cautella (Walker) (Lepidoptera: Pyralidae) (male: 32.00 ± 1.61 days; female: 36.75 ± 0.25 days) than CBM eggs (male: 13.00 ± 0.00; female: 31.00 ± 2.00). The highest total predation by the predator larvae were found against the eggs of CBM (12671.11 at high RH) followed by motiles of CBM and DPM (4696.53 and 4088.16 at low RH), respectively. Considering the significance of CBM and DPM as a pest in the arid climate of Saudi Arabia, it is essential to understand how C. carnea responds to these pests at low RH. These results depict that the predator larvae voraciously fed on eggs and motiles of mite pest species revealing its potential use as a biological control agent against spider mites at both low and high RH levels. The high predation rate and completion of life cycle on the eggs of CBM could also be considered as satisfactory indication of the potential use of C. carnea larvae for spider mite management. The inability of the predator larvae to complete the life cycle against motiles of CBM and DPM could help to devise a management plan for multiple/repeated releases of the predator larvae.

低湿度条件下,大黄叶螨(Chrysoperla carnea)(昆虫纲:神经翅目:大黄叶螨科)捕食两种重要的蜘蛛螨(Acari: Tetranychidae)的生物学特性及捕食行为。
研究了在低相对湿度(35±5%)条件下,以柑橘褐螨(CBM)、东方叶螨(Klein)(粉螨螨目:叶螨科)和枣棕榈螨(DPM)、afrasiaticus(粉螨目:粉螨科)两种具有重要经济意义的蜘蛛螨害虫为食的泛型捕食者金翅螨(Chrysoperla carnea,神经翅目:粉螨科)的生物学和捕食行为。结果表明,在低RH和高RH条件下,捕食者幼虫均未化蛹。在低RH和高RH条件下,对CBM幼虫的总捕食期最短,分别为(14.65±0.15 d)和(15.42±0.80 d)。以鳞翅目:皮蝇科(Ephestia cautella Walker)卵为食,成虫寿命明显延长(雄:32.00±1.61 d;雌卵:36.75±0.25天)大于CBM卵(雄卵:13.00±0.00天;女性:31.00±2.00)。在高RH条件下,捕食者幼虫对CBM卵的总捕食量最高(12671.11),其次是CBM和DPM(4696.53和4088.16)。考虑到CBM和DPM作为一种害虫在沙特阿拉伯干旱气候中的重要性,有必要了解在低相对湿度下c.a carnea对这些害虫的反应。这些结果表明,捕食者幼虫贪婪地以螨害虫的卵和运动为食,揭示了其作为生物防治剂在低RH和高RH水平下对蜘蛛螨的潜在作用。CBM卵的高捕食率和生命周期的完成也可以被认为是CBM幼虫在管理蜘蛛螨方面的潜在应用。捕食者幼虫无法完成对CBM和DPM运动的生命周期,这有助于制定捕食者幼虫多次/重复释放的管理计划。
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来源期刊
CiteScore
3.90
自引率
9.10%
发文量
81
审稿时长
4-8 weeks
期刊介绍: Experimental and Applied Acarology publishes peer-reviewed original papers describing advances in basic and applied research on mites and ticks. Coverage encompasses all Acari, including those of environmental, agricultural, medical and veterinary importance, and all the ways in which they interact with other organisms (plants, arthropods and other animals). The subject matter draws upon a wide variety of disciplines, including evolutionary biology, ecology, epidemiology, physiology, biochemistry, toxicology, immunology, genetics, molecular biology and pest management sciences.
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